SNMP Community is not working

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echonoc
Posts: 29
Joined: Wed Dec 02, 2020 5:07 pm

SNMP Community is not working

Post by echonoc »

Hi,

I need your help since some FW are not responding to SNMP. We setup this community 7cq%O*p3u&7G
but I am not sure if it has the correct nomenclature, I mean, NagiosXi accept any character?

When I run the command Nagios suggest in the server I get this:
________________________________________________________________________________________________________________
[root@cdcprodnagmo01 ~]# /usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed '100000000' '7cq%O*p3u&7G@192.168.223.3:161::::2'
Subroutine SNMP_Session::pack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 149.
Subroutine SNMP_Session::unpack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 149.
Subroutine SNMPv1_Session::pack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 604.
Subroutine SNMPv1_Session::unpack_sockaddr_in6 redefined at /usr/share/perl5/vendor_perl/Exporter.pm line 66.
at /usr/bin/../lib64/mrtg2/SNMP_Session.pm line 604.
--base: Get Device Info on 7cq%O*p3u&7G@192.168.223.3:161::::2
SNMP Error:
no response received
SNMPv2c_Session (remote host: "192.168.223.3" [192.168.223.3].161)
community: "7cq%O*p3u&7G"
request ID: -2000938572
PDU bufsize: 8000 bytes
timeout: 2s
retries: 5
backoff: 1)
at /usr/bin/../lib64/mrtg2/SNMP_util.pm line 651.
SNMPWALK Problem for 1.3.6.1.2.1.1 on 7cq%O*p3u&7G@192.168.223.3:161::::2:v4only
at /usr/bin/cfgmaker line 952.
WARNING: Skipping 7cq%O*p3u&7G@192.168.223.3:161::::2 as no info could be retrieved

Use of uninitialized value $comment_sysdescr in substitution (s///) at /usr/bin/cfgmaker line 380.
Use of uninitialized value $sysname in concatenation (.) or string at /usr/bin/cfgmaker line 413.
Use of uninitialized value $comment_sysdescr in concatenation (.) or string at /usr/bin/cfgmaker line 413.
Use of uninitialized value $syscontact in concatenation (.) or string at /usr/bin/cfgmaker line 413.
Use of uninitialized value $syslocation in concatenation (.) or string at /usr/bin/cfgmaker line 413.
# Created by
# /usr/bin/cfgmaker --show-op-down --noreversedns --zero-speed 100000000 "7cq%O*p3u&7G@192.168.223.3:161::::2"


### Global Config Options

# for UNIX
# WorkDir: /home/http/mrtg

# or for NT
# WorkDir: c:\mrtgdata

### Global Defaults

# to get bits instead of bytes and graphs growing to the right
# Options[_]: growright, bits

EnableIPv6: no

######################################################################
# System:
# Description:
# Contact:
# Location:
######################################################################
________________________________________________________________________________________________________________

When I run the coomand below I get this:

[root@cdcprodnagmo01 ~]# snmpwalk -v2c -c 7cq%O*p3u&7G 192.168.223.3
[1] 2650868
-bash: 7G: command not found
[root@cdcprodnagmo01 ~]# No hostname specified.
USAGE: snmpwalk [OPTIONS] AGENT [OID]

Version: 5.8
Web: http://www.net-snmp.org/
Email: net-snmp-coders@lists.sourceforge.net
benjaminsmith
Posts: 5324
Joined: Wed Aug 22, 2018 4:39 pm
Location: saint paul

Re: SNMP Community is not working

Post by benjaminsmith »

Hi,

For the snmpwalk command, please try wrapping your community string in single quotes and test again.

I searched that error and you seem to be hitting the issue in the document below. Please take a backup of the SNMP_Session.pm, and make the recommended changes and then test again.

Nagios XI - MRTG Reports SNMP_Session Errors

--Benjamin
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